Triumph - 81CS


Brand: Triumph (Triumph-Adler)
Model: 81CS
Type: Almost scientific calculator
Picture: Triumph 81CS
Batteries: AA x 2
Lifetime: Introduced: unknown
Terminated: unknown
Notes: This is a calculator with some scientific functions, such as powers, roots, the constant π, reciprocals and percentages.

The calculator has memory, and the special "Σ"-slider, when set to Σ will automatically add a calculation's result to the calculator's memory when the "="-key is pressed.

Pressing the "Mout"-key twice will clear the memory.

I couldn't figure out what the "ALG - BUS"-slider does.

Just like the Triumph 81C, every key has its own spring.


A power adapter.

©2023 Ernst Mulder